Plain Language Recommendations
In tests/quizzes: If non-text content is used in a test that would be invalid if presented in text, then text alternatives must at least provide descriptive identification of the non-text content.
Notes
- The alt attribute has a length limit of 100 characters.
WCAG 2.0 Recommendations
Guideline 1.1: Text Alternatives
Provide text alternatives for any non-text content so that it can be changed into other forms people need, such as large print, braille, speech, symbols or simpler language.